Given the function f (x) = - 5x^2-x+30, find f (3)

What is the area of the combined rectangles that is used in 9 feet 5 feet 5 feet 7 feet by 14 feet and 12 feet

Beach City sells sunscreen for $10.00. What is the sales tax rate if the total cost of the sunscreen is $10.83?

The difference between 5 times a number and 4 is 16

Jason and his mother are re-tiling the kitchen floor. The area of the kitchen floor is 96.75 square feet. Each tile has an area of 1.25 square feet. How many tiles will Jason and his mother need to tile the kitchen? Do i need to multiply?

Ben was holding a bake sale to raise money for his field trip. He sold cookies for $2 each, muffins for $1 each, and lemonade for $4 a bottle.

The surface area of 10ft 7ft 10ft

Find the diameter and radius of a circle given the approximate circumference of 38 meters. (3.14 for pi) Sorry for these questions but I just don't understand them; -;

A jar contains 6 red marbles, 12 blue marbles, and 2 green marbles. if one marble is selected at random, find the probaility of select: a blue or a green marble

is - 0.28764 rational or irrational and how do you figure that out?

Whats the nearest 100 to 469019